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Whisper Bio-bag Cartridges Complete The Whisper Power Filter Package For A Clean, Easy-to-maintain Aquarium. The Whisper Bio-bag Multi-packs Come Unassembled And Offer Economical Pricing On Larger Quantities.

Three Filters In One For Cleaner Water And Healthier Fish. All Whisper Legacy Filters Use Easy To Change Bio-bags Which Remove Particles Floating In Your Aquarium While Also Removing Discoloration And Odors With It Activated Carbon. Biological Filtration